 | Lisa Muehle - Study Aids - 2004 - 239 pages
...relationship between w and x is proportional to the relationship between y and z. In any proportion, the product of the means is equal to the product of the extremes. In the proportion above, x • y = w • z. SAT PRACTICE: RATIO & PROPORTION (SIMPLE RATIOS) Of 200... | |
 | Joseph A. Alvarez, Pauline Beard, R. Chasnov, Anita Price Davis, L. A. Giesmann, G. F. Greif, T. M. Hagle, M. Hankins, Thomas C. Kennedy, James S. Malek, M. R. Murnik, J. C. Norman, J. G. Robison, G. W. Sheldon, W. L. Stone, B. Swyhart, G. D. Thomas, W. C. Uhland, W. F. Wachol - Medical colleges - 2004 - 1060 pages
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In any proportion, the product of the means is equal to the product of the extremes. 
